244291321 has 2 divisors, whose sum is σ = 244291322. Its totient is φ = 244291320.

The previous prime is 244291291. The next prime is 244291339. The reversal of 244291321 is 123192442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133726096 + 110565225 = 11564^2 + 10515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244291321 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 244291321.

It is not a weakly prime, because it can be changed into another prime (244291391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122145660 + 122145661.

It is an arithmetic number, because the mean of its divisors is an integer number (122145661).

Almost surely, 2^244291321 is an apocalyptic number.

It is an amenable number.

244291321 is a deficient number, since it is larger than the sum of its proper divisors (1).

244291321 is an equidigital number, since it uses as much as digits as its factorization.

244291321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 244291321 is about 15629.8215280917. The cubic root of 244291321 is about 625.1285674708.

The spelling of 244291321 in words is "two hundred forty-four million, two hundred ninety-one thousand, three hundred twenty-one".